A Toyota Denso tester user had some problem with the device. He had the power-on button pressed after well connected with vehicle through DLC. But the machine remains in the main program and the indicator light of the main unit stopped flash at the same time. He tried to touch the screen, but there was no click sound.
Possible reason:
The Intelligent tester screen has not been calibrated.

Solution:

How to do Toyota Intelligent Tester 2 screen calibration?

The Tester IT2 comes with 3 TF cards, V2015.04 For Toyota, V2015.04 for Suzuki and empty card for backup.